Who is the mystery revealed to Paul supposed to be shown to?
The mystery revealed to Paul was to be shown to all men—the whole human race—not just Israel or the Gentiles. Paul was made a minister to make all men see the fellowship of the mystery that had been hidden in God.
Les explains that the mystery revealed to Paul was to be made known to all men, not just Israel or the Gentiles, but the whole human race. God had the Gentiles on His mind, and the mystery includes that Gentiles are fellow heirs, of the same body, and partakers of the promise. Paul was made a minister according to the gift of grace to make all men see the fellowship of the mystery hidden in God. Another aspect from Colossians is that Israel is spiritually blinded for almost two thousand years while Gentiles come into a privileged position in the body of Christ.
And to make all men see what is the fellowship of the mystery, which from the beginning of the world hath been hid in God, who created all things by Jesus Christ:
More Questions
Why was the mystery Paul proclaimed never revealed in earlier ages?
The mystery Paul writes about had never been revealed before, because God had hidden it in Himself from the beginning of the age.
Since when has the mystery Paul reveals been hidden, and what word does Scripture use for it?
The mystery Paul writes about has been hidden since the beginning of the age — 'age' being a better word than 'world' — and the operative word is 'hid.'